Mining-car wheel.



A. B. DAY. MINING GAR WHEEL.

APPLICATION FILED JUNE 25.

Patented Nov. 17, 1914.

ALFRED BRYANT DAY, OF KNOXVILLE, TENNESSEE.

MINING-CAR WHEEL.

Specification of Letters Patent Patented Nov. 1'7, 1M 4% Application filed June 25, 1914. Serial No. 847,216.

To all whom it may concern Be it known that I, ALFRED B. DAY, a citizen of the United States, residing at Knoxville, in the county of Knox and State of Tennessee, have invented certain new and useful Improvements in Mining-Car Wheels, of which the following is a specification, reference being had therein to the accompanying drawing.

My invention relates to wheels, and while applicable to difi'erent-uses, is more especially designed for service in connection with mining car constructions.

In my former Patent No. 870941, issued November 12, 1907, there is disclosed a type of car wheel which has gone into extensive use and proven largely satisfactory, especially in the lubricating characteristics thereof. In this patent the lubricant is admitted through a 'valve controlled opening in the hub cap, and the present invention is designed to improve on the construction of my former patent, While, at the same time, to preserve the advantages of feeding the lubricant through the hub cap substantially as illustrated in the patented construction. In the patented construction a key lock is provided between the outer end of the axle and the hub part whereby to resist the end thrust of the axle in rounding curves, but in practice it has been found highly desirable to provide an end thrust bearing on the hub cap, substantially centrally thereof, to be engaged by the end of the axle, thereby considerably reducing the friction of these parts in their relative rotary movement, and to protect the peripheral portions of the axle and hub against unnecessary Wear.

Having in mind the advantages of the central end thrust bearing on the hub cap, the present invention is designed to provide a wheel, the hub of which has a central end thrust bearing for the axle, and also has an'oil receiving opening with connecting channels leading to the periphery of the axle, the said opening and channels being constructed and arranged whereby the hub cap will not be materially weakened, and will adequately withstand the end thrust of the axle without appreciable wear upon the parts.

In my Patent No. 907750, issued December 29, 1908, is illustrated a hub cap havin an end thrust bearin for the axle, but

'this structure, while satisfactory in many particulars, is open to the objection of: engaging the axle at the periphery, with the incident wear and friction between the parts, all of which is overcome by my pres ent improvement. i

More particularly the present invention 1ncludes a hollow hub part having in its capportion a substantially central oil rcceiving openlng, and said cap portion being enlarged whereby to provide a central abutment overlying the oil receiving opening, and adapted to be en aged bv the end of thc axlc,'the periphera wall oi the hub being provided with spaced oil channels leading from the oil inlet to various points about the periphery of the axle. )oiipera mg means is also provided between the inner end of the hub and axle members to resist end thrusts in an o iposite direction.

It is a further obj cct oi? the present invention to provide a wheel (if the character stated, simple in design and construction, cheap to produce, easy to thoroughly lu bricate, and otherwise highly cllicieut and durable in use. d

Other objects, improvements and novel details in the construction and arrangement of parts will be more readily appreciated from the description to follpw, which, for a clear understanding of the invention, is to be considered in connection with the are coinpanying drawings forming a part hereof, and wherein is disclosed, for the purpose of illustration, a convenient and satisfactory embodiment of the invention.

In the drawings :--Figurc l is a vertical longitudinal sectional view of my improvement, and Fig. is an end view of the hub.

With more particular reference to the drawings, wherein like reference numerals refer to corresponding parts throughout tlu several views, 1 is a section of a car frame broken away, and .2, a pedestal member of any desired construction, having an axle opening extending therethrough and an enlarged hub receiving portion 3 lis the axle,

rs-ember, whereby to receive suitable lubricant packing, if desired, and to eliminate friction between. these parts. 'Suitable loch lrcys 9, preferably square in cross section, may. be provided, the same projecting through the wall of the pedestal member and adapted to be positioned in a groove or channel 10 provided in the pecc tral end thrust bearing for the aisle.

Arranged in the cap port1on12 at the rear octthe end thrust bearing 1S a suitable oilcl'iamber 13, communicating with a threaded opening in the end wall of ther hub cap. Adapted'to be positionedin said threaded onenin is a suitable valve carr re mg hollow and having at its inner end a suitable perforated screenand abutment 15. A disk-shaped valve 16 is adapted to normally close the inlet opening 16 of the nut 14, the

same being held to its seat normally by the means oi: asuitablespiral spring 1 engaging. at one end on the inner surface of the valve disk 16, and at its opposite end the 18 are suitable reservoirs in abutment 1.5. the periphery of the hub member 16, the said reservoirs being in communication With the oil chamber 13, by means of channels 19, arranged inthe Wall 'o'l -the hub member.

Preferably the oil reservoirs 18 and chain ncls 19 are spaced about the periphery of the hub 6, three (3) being shown for the purpose of illustration, and they are so con structed and arranged that they Will not tend to weaken the end thrust bearing portion 12 of said hub; 'The channels 19 preferably incline from their point oi connec-.

tion With the oil chambers 13 to their point of connection with the; oil reservoirs 18, and said channels preferably communicate with that portion of the axle receiving opening of the hub adjacent the periphery of the end of the axle, to the end that this portion of the axle may be lubricated. To provide for the lubrication of otherportions of the axle the reservoirs 1S communicate with the axle through suitable oil ways 20 and 21. 'In

this way all portions of the axle Within the hub will be adequately lubricated.

The construction and operation of the device will be clear to those skilled iii the art from the above descriptiow-it being noted in this connection when in use the 'ier 14, in the form of a threaded nut, the valve carrying member 1t being.

. thrust bearing.

Wheel thrusts will be resisted in one directionby the key members 9, and in an oppo' site direction by the end thrust bearing 12, engaging over the end of the axle. This end thrust bearing affords the least resistance to the parts in their relative rotary movement.

lWhen it is desired to lubricate the bear- 7 ing it is only necessary to force thevalve disk 16 against the action of its spring and insert the 011 into the oil chamber 13 from whence it flows through the channels 19 into the reservoirs l8, and thence through the openings 20 and 21 into contact with the axle, a certain portion of the oil finding a "Way to the end of the axlein its passage sired to insert, a heavy lubricant, the valve carrying nutld and its associated parts may be removed from the threaded. opening of the hub cap and the-lubricant inserted directly through the opening of the hub cap.

The central end thrust bearing provided by the hub for the end of the axle Will-not tend to Wear away the outer edge or" the axle,

and, on the other hand, the axle itself cannot Work against and destroy the surface of the spline valve which is protected by the end I claim I 1. In a wheel, the combination of a pedes tal having a hub receiving portion, a Wheel having a hub loosely positioned in said. hub

receiving.portion,said hub being hollow to i receive the end of an axle, and the hub cap having a substantially central end thrust bearing part for the end of the axleand also through the channels 19. Should it bedehaving an oil inletand aconnecting channel Y leading to the periphery of the axle.

2. In a Wheel, the combinationof a pedestal having a hub r ceiving portion, a Wheel having a hub loosely positioned in said hub receiving'portion, said hub being hollow to receive the end of an axle, and'the hub cap having a substantially central end thrust bearing part for the end-oi the axle and also having a substantially central oilinlet and channels leading to the longitudinally spaced portions of the'periphery of the axle, said channels having communication through the periphery of the hub to the oil inlet.-

8. In a device of the character described,

a pedestal, a wheel having a hub rotatablymounted on said pedestal, the hub cap having an oil inlet and a central end thrust bearing for the axle, andsald hub also having an oil chamber to the rear of'said bearing communicating with the inlet andan oil channel'arranged at opposite sides of the end thrust bearing communicating with the oil chamber and loading to the periphery of the axle.

4. In a mining car Wheel construction, the combination of a hub having an opening for the reception of an axle end, the end wall of the hub. bein relatively thick to provide a central end tirust bearing for the axle, an oil chamber in the end wall of the hub in the rear of said bearing. an oil inlet leading to said oil chamber, and an oil passage establishing communication between said chamher and the axle.

In a mining car wheel construction, the combination of a hub having an opening for the reception of an axle end, the end wall of the hub being relativeiy'thicli to provide a central endthrust bearing for the axle, an oil chamber in the end wall of the hub in the rear of said bearing, an oil inlet leading to said oil chamber, an oil reservoir in the peripheral wall of the hub in communication with the oil chamber, oil outlets leading to the axle from said reservoir, and an oil inlet in the end of the hub.

6. In a mining car wheel construction, the combination of a pedestal member having a hub receiving part, a wheel having a hub with a portion projecting into the hub receiving part of the pedestal, the said hub haviiig an annular groove with straight sides, and a locking key projecting through the pedestal and having a straight edge to engage the straight side of said groove, in integral end thrust bearing on the hub ada )ted to overlie substantially the entire sur ace of the end of the axle, and said hub having an oilinlet in its end in the rear of said end thrust bearing, and communicating channels leading from said inlet through the periphery of the hubv and communicating with theaxle receiving ortion of the hub.

7. In a mining car w eel, the combination of a edcstal having a hub receiving part,a

whee hub adapted to be positioned in the hub receiving part of the pedestal for rotatable movement, said hub having an axle receiving opening and an integral end thrust bearing extending substantiallv over the entire surface of the end of the axle, and an oil chamber at the rear of said end thrust hearing, and a channel, leadin from said oil chamber to the periphery iii the end of the axle.

8. In a mining car ivhee], the combination of a pedestal having, a hub receiving part, a wheel hub adapted to be positioned in the hub receiving part of the pedestal for rotatable inovcn'ient, said huh having an axle receiving opening and an integral end thrust bearing extending substantially over the entire surface of the end of the axle. and an oil chamber at the rear of said end thrust hearing; and a channel leading from said oii chamber to the periphery of the endof the axle, and additional oil channels leading to the axle at separated longitudinal points thereof.

9. in a mining car wheel, the combination of a pedestal having a hub receiving part, a. wheel hub adapted to be positioned in the hub receiving part of the pedestal for rotatable movement, said hub having an axle receiving opening and an integral end thrust bearing extending substantially over the entire surface of thecnd of the axle, and an oil chamber at the rear of said-end throat bearing, channels leading from said oil chamber to the periphery of the end of the axle, a valve controlled inlet in the hub-cap, and spring means in the oil' chamber for normally holding said valve closed.

In testimony whereof I hereunto ailix my signature in the presence of witnesses.

' ALFRED BRYANT DAY.

Witnesses:

A. A. Sommn, 1". W. lioittn, L. S. STEEL. 

